Abstract
Abstract
Neutrinos from the cosmos have proven to be ideal for probing the nature of space-time. Previous studies on high-energy events of IceCube suggested that some of these events might be gamma-ray burst neutrinos, with their speeds varying linearly with their energy, implying also the coexistence of subluminal and superluminal propagation. However, a recent reanalysis of the data, incorporating revised directional information, reveals stronger signals that neutrinos are actually being slowed down compared to previous suggestion of neutrino speed variation. Thus, it is worth discussing its implications for the brane/string inspired framework of space-time foam, which has been used to explain previous observations. We revisit effects on neutrino propagation from specific foam models within the framework, indicating that the implied violation of Lorentz invariance could necessarily cause the neutrino to decelerate. We therefore argue that this sort of model is in agreement with the updated phenomenological indication just mentioned. An extended analysis of the revised IceCube data will further test these observations and stringy quantum gravity.
Publisher
Springer Science and Business Media LLC
Reference61 articles.
1. P. He and B.-Q. Ma, Lorentz Symmetry Violation of Cosmic Photons, Universe 8 (2022) 323 [arXiv:2206.08180] [INSPIRE].
2. U. Jacob and T. Piran, Neutrinos from gamma-ray bursts as a tool to explore quantum-gravity-induced Lorentz violation, Nature Phys. 3 (2007) 87 [hep-ph/0607145] [INSPIRE].
3. G. Amelino-Camelia and L. Smolin, Prospects for constraining quantum gravity dispersion with near term observations, Phys. Rev. D 80 (2009) 084017 [arXiv:0906.3731] [INSPIRE].
4. G. Amelino-Camelia, D. Guetta and T. Piran, IceCube Neutrinos and Lorentz Invariance Violation, Astrophys. J. 806 (2015) 269 [INSPIRE].
5. IceCube collaboration, First observation of PeV-energy neutrinos with IceCube, Phys. Rev. Lett. 111 (2013) 021103 [arXiv:1304.5356] [INSPIRE].
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献